Lenovo B4400 Notebook - Manual (Page 44)

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Appendix. CRU (Customer Replaceable Units) instructions
Replacing the Mini PCI Express Card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To replace the Mini PCI Express Card, do the following:
1 Turn off the computer. Disconnect the AC power adapter and all cables
from the computer.
2 Close the computer display and turn the computer over.
3 Remove the battery pack.
4 Remove the Hard disk drive/Memory/Mini PCI Express Card slot
compartment cover.
5 Disconnect the two cables (one black, one white) .
6 Remove the screw that secures the Mini PCI Express Card .
Note: The Mini PCI Express Card in select models may have only one cable (black).
a
a
b
b